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Computer Engineering
Consider the following MIPS assembly language procedure: $sp, $sp, -4 $a0, O($sp) $a1, $0, thingdone $t0, 0($a0) $t0, $t0, 1 $t0, O($a0) $a0, $a0, 4 $a1, $a1, -1 thingloop $a1, O($sp) $sp, $sp, 4 $ra thingy: addi sw thingloop: beq lw addi thingdo: Sw addi addi j thingdone: lw addi jr i. What do the first two lines of the assembly language do? ii. What does the last line of the assembly language do? ii. What is the value of $a1 when the procedure returns? iv. How many times is the line labelled thingdo executed for a single call to the procedure?

Consider the following MIPS assembly language procedure: $sp, $sp, -4 $a0, O($sp) $a1, $0, thingdone $t0, 0($a0) $t0, $t0, 1 $t0, O($a0) $a0, $a0, 4 $a1, $a1, -1 thingloop $a1, O($sp) $sp, $sp, 4 $ra thingy: addi sw thingloop: beq lw addi thingdo: Sw addi addi j thingdone: lw addi jr i. What do the first two lines of the assembly language do? ii. What does the last line of the assembly language do? ii. What is the value of $a1 when the procedure returns? iv. How many times is the line labelled thingdo executed for a single call to the procedure?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the following MIPS assembly language procedure: $sp, $sp, -4 $a0, O($sp) $a1, $0, thingdone $t0, 0($a0) $t0, $t0, 1 $t0, O($a0) $a0, $a0, 4 $a1, $a1, -1 thingloop $a1, O($sp) $sp, $sp, 4 $ra thingy: addi sw thingloop: beq lw addi thingdo: Sw addi addi j thingdone: lw addi jr i. What do the first two lines of the assembly language do? ii. What does the last line of the assembly language do? ii. What is the value of $a1 when the procedure returns? iv. How many times is the line labelled thingdo executed for a single call to the procedure?
Transcribed Image Text:Consider the following MIPS assembly language procedure: $sp, $sp, -4 $a0, O($sp) $a1, $0, thingdone $t0, 0($a0) $t0, $t0, 1 $t0, O($a0) $a0, $a0, 4 $a1, $a1, -1 thingloop $a1, O($sp) $sp, $sp, 4 $ra thingy: addi sw thingloop: beq lw addi thingdo: Sw addi addi j thingdone: lw addi jr i. What do the first two lines of the assembly language do? ii. What does the last line of the assembly language do? ii. What is the value of $a1 when the procedure returns? iv. How many times is the line labelled thingdo executed for a single call to the procedure?
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